Republican presidential nominee Donald Trump’s proposal to impose congressional term limits is unlikely to attract many allies in a Congress where he already has few. But there are still a few dozen Republicans he could likely count on to back the idea.

Congressional term limits can only be imposed through the adoption of a constitutional amendment. Nine Republican members of Congress have introduced several resolutions calling for such an amendment, collectively garnering a few dozen GOP co-sponsors.

Republican presidential nominee Donald Trump on Tuesday pledged that, if elected, he will push for a constitutional amendment to impose term limits for members of Congress.

“Decades of failure in Washington and decades of special interest dealing must and will come to an end,” Trump said at a Colorado rally during which he announced his support for limiting members and senators’ tenures.